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S33550 Stainless Steel vs. EN 1.4578 Stainless Steel

Both S33550 stainless steel and EN 1.4578 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S33550 stainless steel and the bottom bar is EN 1.4578 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
51
Fatigue Strength, MPa 270
200
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 470
400
Tensile Strength: Ultimate (UTS), MPa 680
550
Tensile Strength: Yield (Proof), MPa 310
200

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 470
410
Maximum Temperature: Mechanical, °C 1100
930
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1360
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 24
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.3
3.7
Embodied Energy, MJ/kg 61
51
Embodied Water, L/kg 190
160

Common Calculations

PREN (Pitting Resistance) 30
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
220
Resilience: Unit (Modulus of Resilience), kJ/m3 250
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 3.9
3.9
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.040
Cerium (Ce), % 0.025 to 0.070
0
Chromium (Cr), % 25 to 28
16.5 to 17.5
Copper (Cu), % 0
3.0 to 3.5
Iron (Fe), % 48.8 to 58.2
62.3 to 68.5
Lanthanum (La), % 0.025 to 0.070
0
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 16.5 to 20
10 to 11
Niobium (Nb), % 0.050 to 0.15
0
Nitrogen (N), % 0.18 to 0.25
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015